Elements and Performance Criteria
- Conduct dispenser sampling processes
- Conduct fueller sampling processes
- Fuel samples are taken from the fueller for visual testing at the commencement of daily operations and during fuelling operations in accordance with workplace procedures and regulatory requirements
- Additional samples are taken from the fueller after defuelling operations, vehicle washing, maintenance and heavy rain
- Conduct visual check of fuel samples
- Fuel sample is inspected and the colour correctly identified and interpreted to determine the grade of fuel in accordance with workplace procedures and established colour criteria
- Sample is correctly inspected for free water and dirt particles in accordance with workplace procedures and established manual or automated processes
- Water detector capsules are correctly used to check for suspended water in accordance with manufacturers instructions and workplace procedures
- Results of visual checks are recorded/reported in accordance with workplace procedures and regulatory requirements
- Test membrane filtration (millepore sampling)
- Hydrant dispenser vehicle is correctly positioned at the test rig and interlocked/chocked in accordance with workplace procedures
- Fuellers are correctly tested independent of the test rig by circulating product through the delivery hose back to tank to achieve required flow rates
- Bonding leads are attached in accordance with workplace procedures
- In the case of fuellers/dispensers, the delivery hoses are connected to achieve a flow rate of at least 50% of rated flow of filter
- In the case of a hydrant dispenser, lanyard is connected to the pit valve and inlet hose is correctly connected in accordance with workplace procedures
- Colorimetric capsule is loaded in accordance with manufacturers instructions and workplace procedures (Note: for gravimetric testing and microbiological testing [black millepore] capsules are generally pre-loaded in a laboratory)
- Checks are made to ensure capsule is correctly located in the housing with the millepore monitor inlet facing upstream
- Apparatus is correctly connected to filter outlet millepore sample connection or nozzle millepore sample point
- Pressure and flow rate are adjusted to workplace specifications
- Apparatus is flushed
- In case of monthly calorimetric test, sample is drawn
- In case of three-monthly gravimetric and microbiological tests, initial sample is drawn for gravimetric test then gravimetric capsule is replaced with microbiological capsule and another sample drawn in accordance with workplace procedures
- Apparatus is disconnected and capsule is removed
- Gravimetric and microbiological samples are labelled and despatched to laboratory in accordance with workplace procedures
- Colorimetric assessment is conducted in accordance with manufacturers instructions and workplace procedures
- Results of tests are documented in accordance with workplace procedures and regulatory requirements
- Measure pressure differential on filter vessels
- Gauge is checked in accordance with manufacturers instructions and workplace procedures
- Flow through vessel into aircraft or test rig is started in accordance with workplace procedures
- Pressure differential at maximum flow rate obtained is read
- Results are analysed and recorded in accordance with workplace procedures and regulatory requirements
- In situations where the differential pressure exceeds filter manufacturers recommended differential pressure, at flow rates above 50% of the maximum rated flow of the filter vessel, the situation is to be reported immediately to supervisor in accordance with workplace procedures and regulatory requirements for investigation